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當前位置:首頁產品中心德國E+H恩德斯豪斯E+H流量計德國正品Endress+Hause電磁流量計50P80-EAOA1AAOAAAA

德國正品Endress+Hause電磁流量計50P80-EAOA1AAOAAAA

產品簡介

Proline系列變送器具有下列優(yōu)點:
采用模塊化結構設計和操作方法,變送器具有更高的測量效率
可選電極清洗軟件
高可靠性和高測量穩(wěn)定性
統(tǒng)一的操作模式
Promag系列傳感器經過多次試驗和測試,具有下列優(yōu)點:
無壓損
抗振性強
安裝和調試簡便

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更新時間:2024-07-03
廠商性質:經銷商
訪問量:734

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 德國正品Endress+Hause電磁流量計50P80-EAOA1AAOAAAA

E+H電磁流量計是根據(jù)法拉第電磁感應定律進行流量測量的流量計。電磁流量計的優(yōu)點是壓損極小,可測流量范圍大。zui大流量與zui小流量的比值一般為20:1以上,適用的工業(yè)管徑范圍寬,zui大可達3m,輸出信號和被測流量成線性,精確度較高,可測量電導率≥1μs/cm的酸、堿、鹽溶液、水、污水、腐蝕性液體以及泥漿、礦漿的流體流量。但它不能測量氣體、蒸汽以及純凈水的流量。
當導體在磁場中作切割磁力線運動時,在導體中會產生感應電勢,感應電勢的大小與導體在磁場中的有效長度及導體在磁場中作垂直于磁場方向運動的速度成正比。同理,導電流體在磁場中作垂直方向流動而切割磁感應力線時,也會在管道兩邊的電極上產生感應電勢。感應電勢的方向由右手定則判定,感應電勢的大小由下式確定:
Ex=BDv-----------------式(1)
式中Ex—感應電勢,V;
B—磁感應強度,T
D—管道內徑,m
v—液體的平均流速,m/s
然而體積流量qv等于流體的流速v與管道截面積(πD?)/4的乘積,將式(1)代入該式得:
Qv=(πD/4B)* Ex ---------式(2)
由上式可知,在管道直徑D己定且保持磁感應強度B不變時,被測體積流量與感應電勢呈線性關系。若在管道兩側各插入一根電極,就可引入感應電勢Ex,測量此電勢的大小,就可求得體積流量。
德國正品Endress+Hause電磁流量計50P系列測量原理:根據(jù)法拉第電磁感應定律,在磁感應強度為B的均勻磁場中,垂直于磁場方向放一個內徑為D的不導磁管道,當導電液體在管道中以流速v流動時,導電流體就切割磁力線.如果在管道截面上垂直于磁場的直徑兩端安裝一對電極則可以證明,只要管道內流速分布為軸對稱分布,兩電極之間產生感生電動勢:
e=KBDv (3-36)
式中,v為管道截面上的平均流速,k為儀表常數(shù)。由此可得管道的體積流量為:
qv= πeD/4KB (3-37)
由上式可見,體積流量qv與感應電動勢e和測量管內徑D成線性關系,與磁場的磁感應強度B成反比,與其它物理參數(shù)無關。這就是電磁流量計的測量原理。
需要說明的是,要使式(3—37)嚴格成立,必須使電磁流量計測量條件滿足下列假定:
①磁場是均勻分布的恒定磁場;
②被測流體的流速軸對稱分布;
③被測液體是非磁性的;
④被測液體的電導率均勻且各向同性。
公司稅號:3102  2679  1485  648
開票地址:上海市奉賢區(qū)南奉公路6299號224室
開戶銀行:上海銀行愚園路支行
公司帳號:3164 1803 0001 12363
:    
:袁容冰      756412272
付款方式:先預付30%,余款付清后發(fā)貨
德國正品Endress+Hause電磁流量計50P80-EAOA1AAOAAAA
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